. Canadian Shipping and Marine Engineering January-December 1919 . MINE SWEEPERS UNDER CONSTRUCTION 10 MARINE ENGINEERING OF CANADA Volume BIRDS-EYE VIEW OF MINE SWEEPER The main engines are of the triple ex-pansion type and capable of developing560 , operating under a boilerpressure of 185 lbs., and a speed of , cylinders being 13x22x36x24inches. Boilers are of the Scotch marinetype, 12 feet in diameter and 10 feet, 6inches long. These boilers are fittedwith interchangeable Morison corru-gated furnaces 3 feet 6 inches in diame-ter, and operated on the Howden forceddraft syst
. Canadian Shipping and Marine Engineering January-December 1919 . MINE SWEEPERS UNDER CONSTRUCTION 10 MARINE ENGINEERING OF CANADA Volume BIRDS-EYE VIEW OF MINE SWEEPER The main engines are of the triple ex-pansion type and capable of developing560 , operating under a boilerpressure of 185 lbs., and a speed of , cylinders being 13x22x36x24inches. Boilers are of the Scotch marinetype, 12 feet in diameter and 10 feet, 6inches long. These boilers are fittedwith interchangeable Morison corru-gated furnaces 3 feet 6 inches in diame-ter, and operated on the Howden forceddraft system. The vessels are, electriclighted throughout, current being sup-plied by means of 7% , 110 volt,direct connected marine generator sets. An efficient two-pipe heating systemis installed, condensation draining to atrap, and thence discharged to a hotwell. Pipe coil radiators are fitted inall quarters. Boats are equipped witheleven ventilating cowls, those leadingto the boiler room being adjustable fromthe fire hold, so as to meet the varyingconditions. These vessels are built tothe full requirements of Lloyds Regi-ster of shipping a
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